Lubricating apparatus



4 March 6., 1928.

H. J. MURPHY LUBRICATING APPRATUS Filed March 14, 1922 f IW/tena?.- Howard JMuay. @y MMM; I

i Patented i6, 1928.'` .l

UNITED STATES PATENT oFFIc-E.

HOWARD J'. MURPHY, OF READING, IASSACHUS-ETTS, ASSIGNOB, :BY um ASiSIGiI- MENTS, TO THE BASSICK MANUFACTUBIN G- COMPANY, Ol' CHICAGO, ILLINOIS, A

CORPORATION 0F DELAWARE.

Lunnrcsme .urnnaus application mea man 14, ma sml 10.343,65.

This invention pertains to improvements in lubricating apparatus. It is among the objects of the invention to provide a simple and efficient system and apparatus of the type wherein a single source of lubricant under pressure may be connected to and disconnected from a plurality of lubricantreceiving parts.

l.In the drawings, which show a preferred form of one illustrative embodiment of my invention .A

Figure -1 is alside elevation ofa lubricant'- ex elling device; v

ig. 2 is a central longitudinal section through the nozzle of said device, belng partly in elevation, and showing the relation of the parts pursuant to introduction of the nozzle overl the vlubricant-receiving element I but prior to initiation of the coupling operation;

Fig. 3 is a section partly in elevation and similar to Fig. 2 except that it shows the `relation of the parts pursuant to coupling cross-section and providing three and valve-opening operation; u Fig. 4 is a side elevation of the nozzle with the rear end thereof removed;

Fig. 5 is an end elevation of the nozzle with the lubricant-receiving,element entered therein;

Fig. 6 is a section on the line 6-6 of Fig. 2;

Fig. 7 is a section on the line 7-7 of i Fig. 2; H

Fig. 8 includes a side elevation, a central longitudinal section and rearp endelevation of a preferred form of sealing part or gasket holder which also serves as a valve part;l an

Fig. 9 includes a side elevation, a central longitudinal section and rear elevation of a preferred form of valve part cooperating with the gasket holder or valve part shown in'Fi 8.

Refgerring to the drawings and to the preferred form of my invention selected for...` illustrative purposes, I have shown a lubricant-expelling device herein shown as of the so-called gun type including a barrel 10, rear head 11 into which is screw-threaded a stem 12 carrying the usual lubricant-expelling plunger or piston, not shown, at its inner end and provided at its outer end with a handle 13. AtV lthe discharge end of the` vpreferred form of coupling illustrated is gun, I have shown a front head 14 presentlng or cooperating with a nozzle including a valved coupling. This valved .coupling may mclude a coupllng sleeve 15,' connecting sleeve, gasket holder or sealing part 17 carrying t e gasket 18 serving as a valve art 1n cooperation with a valve part 19. he of the rotary type, there being preferably no longitudnalmovement of the gasket holder 17 relative to the coupling sleeve 15. A tight seal may be provided by the lubricantpressed Washer 18, which is preferably adapted to be pressed toward the-lubricantrecelvlng end of the lubricant-receiving nipple. 20 by a slidable iston or gasket 21 whichv may be of leatlier or the like, an which may be interiorly supported by a sprmgcup 22. The lubrlcant-receiving ni f ple 20 is preferably, as illustrated, of t e t pe shown in my copending application, erlal No. 543,654, filed herewith, 'andpresentlng a part 23 generally triangular in t projections adapted to overlie iiange portions 24 of the coupling sleeve 15 when the latter is passed thereover and turned relative thereto. The connectingsleeve 16 has a triangular aperture therethrough corresponding to the cross-section of the triangular portion 23 of the nipple 20 and to the adjacent end `oi. the gasket holder 17 over which the connecting sleeve 16 passes to prevent rotation of the gasket holder relative to the nipple a when the latter is entered in the nozzle. Adjacent the lubricant-receiving end of the nipple, I may provide a generally cylindrical extension 25 preferably undercut, as illustrated. The lubricant-receiving nipple may be drilled its entire length and provide a seat for a ball check at one end and for a spring urging said ball check into closed pos1t1on at the opposite end. The sleeve 16 prevents relative turning movement between l the lubricant-receiving nipple 20 andthe gasket holder or sealing part 17. The sleeve 15 may turn relative to these parts through Ya number of degrees determined bythe limiting slot and pin 26,27, best lshown in Fig. 4.

The valve part 19 is held against rotation relative to the coupling sleeve 15-by a pin' 30, which may be enteredin a slotl in the.

' and the nozzle may these holder 17.

f26 vin the coupling sleeve.

valve part 19 to permit slight longitudinal movement of the valve part relative to the gasket holder 17 so that a tight'seal may be presented between the'abutting surfaces of arts. The gasket holder or sealin part 1 may be provided with a port 32 and the 'valve part,19 may be provided with a ort 33, these parts being brought into register when the coupling sleeve 15 has been turned relative to the gasket holder 17 and to the relative position illustrated in Fig. 4 where the 'coupling operation is comp ete. Lubricant passing through the ports 33 and 32 will press against the piston 21 and urge the asket 18 into sealed relation to the head of e nipple. On closure of the valve by bringing the ports 32 and33 out of register, this pressure ma relieve itself by lubricant ass'ing into or t rough the lubricant-receiving nipple 20. It will be observed that no relative turning movement between the gasket 18 and ni ple 20 takes place either during the coup ing or uncoupling operation.

15 may bev screwedinto securedv .to the head 14, while4 leakage to t s joint or to the joint between the rear end of the coupling .sleeve 15 and valve part The coupling sleeve or otherwise rigidl with a corresponding aperture in the hea cant entering the chamber between the cup art 19 will tend toleather and valve force the valve part s, orward to rovide a tight joint' To holdI the cup leather or piston 40 in tight relationship to the head 14 in the absence of any considerable pressure, a spring 43 ma be providedbetweeny the cup leather 4G an leather 40 may be interiorly supported by a spring cup 45.

Assuming the parts of the valved coupling to be in the position illustrated in Fig. 2, the triangular aperture in the connecting sleeve 16 will registerwith ya triangular opening in the en of the cou ling sleeve 15 be slippe over the correspondingly shaped portion 23 of the lubricant-receiving nipple 20. The face of the lubricant-receivinglnipple adjacent the check valve will press s 'ght y against the gasket 18 and as the gasket holder or sealing part 17 is held against rotation by the connecting sleeve 16,k a kturning of the coupling sleeve 15 will bring the projections on the nipple over the end flanges of the coupling sleeve to the position shown in dotted lines in Fig. 5," at which time relative rotation will stop because the pin 27 of the gasket holder will have reached the end of the slot At the samev tim 'that rotationl stops the rts 32 and 33 of the rotary valve in register. Lubricant under 'pressurewill tioned by 19 may be preventedvby-- a piston orcup leather 40 `having an aper.

with the rear face of t e gasket the valve part 19. The cup now pass through the ports 33, 32 and exert sealing pressure on the gasket 18 by reason of their pressure 'against the piston or cup 21, thus et'ecting a tight joint. The lubricant under pressure will now open a check valve in the lubricant-receiving nip le and lubricant may be orcedtherethroug to the desired extent.v It will be noted that the coupling and valve opening operation is effected by rotary movement of the gun bary rel. The direction of the thread on the stem 12 of the gun is preferably such that rotation inthis same direction, .preferably clockwise, exerts the lubricant expelling pressure. Therefore the entire coupling, valve open ing, sealin and lubricant-expelling operations may 4e effected in the sequence menclockwise rotation of the handle 13. Conversely, valve closure, relief of pressure and uncou ling operations may be effected in the order named by opposite preferably counter-clockwise rotation of: the handle 1,3 or ofthe barrel 10, as may be preferred. i.

The boring out of the valve. part 19 to present the cylindrical recess within which the piston or cup leather 40 woiks, not only provides a tight seal but' also reduces somewhat the area 'of the valve art 19 which is subjectedto the pressure o the lubricant. By this I mean' that the pressure of the lubricant is confined to the cross-sectional area of the bore in which fthe cup leather 40 is located, because the leather 40 prevents any lubricant pressure being exerted upon that portion of' the part 19 encircling the leather 40, as shown in Fig. 2 and 3. us it will be noted that, as t e cross-sectional area of the lar est art of the bore of the part 19 is sm er t an the cross-sectional area of the Sart 17, the saine aggregate pressure exerte upon the smaller area o the part 19, will be exerted upon the larger area of the part 17 and therefore the ressure per square incli on the part 17 will e less than on the part19. This cutting down of area is particularly' desirable where high pressures of from eighteen hundred to three thousand pounds per square inch are to be exerted on the lubricant.

While I have shown and described a precluding a gasket holder, a-gasket for engagement with a face of the 1ubricantreceiving nipple surrounding a 'lubricant-receiving aperture therein and a piston carried by said gasket holder and .ur 'ng said gasket for# wardly into sealed re ationto .said face the nipple.

- 2..Lubricating apparatus comprising a source of lubricantunder pressure resenting a nozzle for connection to a 1u ricantreceiving nipple presenting a lubricant-receiving aperture at one end thereof and projectionsadjacent said end, a sealing part in said nozzle, means for holding -said'Seal-ing part against rotation relative to the nipple While permitting limited rotative movement of said nozzle, a .sealing gasket carriedby said sealing part and a reciprocable piston within said sealing part for exerting 'sealing pressure against saidsealing gasket. f

3. A lubricant gun presentingat its dischar e end a nozzle for a' connection lWith a luricant-receiving nipple, relatively rotatable` valve parts carried by said nozzle,

the valve part nearer said gun having an.

axially bored recess formed therein, and a spring pressed cup washer in sald bore and name to this specification.

making sealing contact with the end of said compressor.

ing, in combination, a barrel, piston means for expelling lubricant from' said barrel, a

front or discharge headfior said barrel, a cou ling or nozzle sleeve rigidly secured to sai frontghead, a sealing part rotatable rel-` ative to said nozzlel or coupling sleeve, a cooperating valve part non-rotatable relative tosaid nozzle sleeve but mounted for limited longitudinal movement relative thereto and slidable packing means between said valve part and said head.

In testimony whereof, I have signed my HOWARD J. MURPHY. 

